int
tun_rtr_process_input_packet(struct sock *sl)
{
packet_tuple_t tpl;
lbuf_use_stack(&pkt_buf, &pkt_recv_buf, MAX_IP_PKT_LEN);
/* Reserve space in case the received packet was IPv6. In this case the IPv6 header is
* not provided */
lbuf_reserve(&pkt_buf,LBUF_STACK_OFFSET);
if (tun_read_and_decap_pkt(sl->fd, &pkt_buf, &(tpl.iid)) != GOOD) {
return (BAD);
}
OOR_LOG(LDBG_3, "Forwarding packet to OUPUT for re-encapsulation");
lbuf_point_to_l3(&pkt_buf);
lbuf_reset_ip(&pkt_buf);
if (pkt_parse_5_tuple(&pkt_buf, &tpl) != GOOD) {
return (BAD);
}
tun_output(&pkt_buf, &tpl);
return(GOOD);
}
int
vpnapi_output(lbuf_t *b)
{
packet_tuple_t tpl;
if (pkt_parse_5_tuple(b, &tpl) != GOOD) {
return (BAD);
}
LMLOG(LDBG_3,"OUTPUT: Received EID %s -> %s, Proto: %d, Port: %d -> %d ",
lisp_addr_to_char(&tpl.src_addr), lisp_addr_to_char(&tpl.dst_addr),
tpl.protocol, tpl.src_port, tpl.dst_port);
/* If already LISP packet, do not encapsulate again */
if (is_lisp_packet(&tpl)) {
LMLOG(LDBG_3,"OUTPUT: Is a lisp packet, do not encapsulate again");
return (vpnapi_forward_native(b, &tpl.dst_addr));
}
vpnapi_output_unicast(b, &tpl);
return(GOOD);
}
